wiedrich



No. 6I0,295. Patented Sept. 6, i898.

C. L. WIEDRICH.

FINISHING MACHINE.

(Application -fled June 17, 1898.) (No Model.)

2 Sheets-Sheet l.

No. 6|0,295. Patented Sept. 6, |898.

C. L. WIEDBICH.

FINISHING MACHINE.

(Application med June 17,` 189s.)

2 Sheets-Sheet 2.

(No Model.)

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UNirnD STATES,

ATENT nnicn CHARLES L. WIEDRICI-I, OF BUFFALO, NEW"YORK, ASSIGNOR TO THE UNITED HAME COMPANY, OF SAME PLACE.

FINISHING-MACHINE.

` SPECIFICATION forming part of Letters Patent No. 610,295, dated September 6, 1898.

Application filed June 17, 1898.

To @ZZ whom t may concern:

Beit known thatl, CHARLES L. WIEDRICH, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Finishing-Machines, of which the following is a specification.

This invention relates to that class of machines whereby wooden hames or other blanks are finished or smoothened and which contain an endless belt provided with a facing of sand or other abrading or polishing material with which the article to be polished or finished is engaged.

The object of this invention is to provide a machine of this character which is simple and durable in construction and which enables articles to be finished conveniently and expeditiously.

In the accompanying drawings, consisting of two sheets, Figure l is a vertical longitudinal section of my improved finishing-machine, showing the same adapted for nishing wooden hames. Fig. 2 is a top plan view of the same, the iinishing-belt being shown in section. Fig. 3 is a horizontal section inline 3 3, Fig. 1. Fig. 4 is a vertical transverse section in line Ll 4, Fig. 1, showing the finishing-belt and its supporting-wheels in an inoperative position. Fig. 5 is a similar view showing the finishing-belt audits supportingwheels in an operative position. v

Like letters of reference refer to like parts in the several figures.

A represents the main frame of the machine, and B B' the horizontal feed and delivery tables, which are arranged on the upper end of the frame and which are separated by an intervening space.

O C represent a pair of horizontal receiving-rollers arranged transversely one above the other in rear of the feed-table, and D D represent a pair of horizontal delivery-rollers arranged transversely one above the other in front of the delivery-table. The receivingrollers are separated from the delivery-rollers by an intervening space, and the several feedrollers' are journaled in bearings in the main frame and rotated in the proper direction by any suitable or well-known mechanism, so as Serial No. 683,681. (No model.)

to carry the blanks from the feed-table across the space between the receiving and delivery rollers to the delivery-table.

E represents an endless linishing band or belt whereby the hames or blanks are finished or smoothened as they pass from thereceiving-rollers to the delivery-rollers. This belt passes with its upper portion around a driving-pulley e and with its lower portion transversely through the space between the receiving and delivery rollers or across the path of the blanks and around the under sides of a pair of wrapping wheels or rollers e e and a pair of take-up wheels or rollers e2 e2, the several wheels or pulleys e e e2 having their axes arranged horizontally and at right angles to the axes of the feed and delivery rollers. The wrapping-wheels serve to wrap the finishing-belt around the blank, so as to form a bight in the belt and cause the latter to operate upon a large portion of the blank. The wrapping-wheels are arranged between the central portions of the receiving and delivery rollers and on opposite sides of the path of the blank to be nished, and each wrapping-wheel is pivoted on the upper end of an arm f, which latter is adjustably secured at its lower end to a vertically-movablecarrier or slide F by a clamping-boltf', passing through a vertical slot f2 in said slide. This slide is guided on a way f3, formed on an upright bar f 4 of the main frame, and is raised and lowered by two parallel horizontal rocklevers G G. These rock-levers pass with their central portions through openings g g in the slide and are pivoted at their rear ends to the main frame, so as to swing in a vertical plane. The rock-levers, together with the slide and the wrapping-Wheels connected therewith, are yieldingly held in an elevated position by means of a spring H, which bears with one end against a cross-bar g', connecting the rock- .levers in rear ofthe slide, and with its other end against a guide-rod h, connected with the main frame.

I represents a depending frictionplate or board whereby the lrock-levers are lowered for wrapping the finishing-belt aroundv ythe hame or blank. This board is pivoted at its upper end to the front ends of the rock-levers ICO l and is provided with a lower thick portion 'L' and an upper thin or reduced portion i'. The lower portion of the friction-board is arranged between two friction-rollers J J', which are arranged transversely side by side. One of the friction-rollers is movable toward the other for engaging the friction-rollers with or disengaging the same from the friction-board, and both rollers are rotated constantly, with their opposing sides moving downwardly. As shown in the drawings, the front frictionwheel .I is journaled at yopposite ends in stationary bearings and is driven in any suitable manner. The rear friction-roller J is journaled in bearings jj', which are movable toward and from the bearings of the opposing roller. The bearing j is pivotally connected with the main frame by a vertical pin j2 and the bearingj' is mounted on the upper arm of a rock-lever J', which is pivoted by a horizontal pin j3 to the main frame, so as to swing in a vertical plane. The lower arm of the rock-lever is provided with a treadle j4 and a weightj5, which normally tends to move the rear friction-roller away from the front friction-roller. The front and rear frictionrollers are caused to turn in unison by means of intermeshing gear-wheels j, secured, respectively, to the shafts of these rollers adjacent tothe bearing j. Upon depressing the treadle the rearfriotion-roller is moved toward the front friction-roller and the frictionboard is clamped between the friction-rollers and feddownwardly. The downward movement of the friction-board continues until the upper end of the thick portion of the latter has moved below and cleared the rollers, when the feedingaction of these rollers stops because these rollers are prevented from engaging with the thin portion of the board. The forward movement of the rear roller may be arrested for preventing gripping of the upper thin portion of the friction-board between the rollers by any suitable means-for instance, by constructing the gear-wheels j6 so that the teeth of one wheel engage with the bottom of the spaces between the teeth on the other wheel when the rear roller is in its foremost position. Upon releasing the treadle the rear friction-roller moves away from the front roller and permits the spring I-I to raise the wrapping-wheels and connecting parts. The upward movement of the rock-levers and connecting parts is cushioned during the last part of this movement by a l of transverse movement toward the center of the machine for providing slack in the finishing-beltwhen the latter is wrapped around theblank and away from the center of the are pivoted on the upper arms of two transversely-movable rock-levers L L', which are pivoted to the main frame and caused to move simultaneously toward and from the center of the machine by a connecting-rod M, which is pivoteduat one end to the rock-lever L below its fulcrum and at its opposite end to the rock-lever L' above the fulcrum thereof. The take-up wheels are normally held in their outermost position by a weight N, connected with one of the take-up rock-levers.

In the normal position of the parts the wrapping-wheels are raised and the take-up wheels are moved outward and the transverse or operative portion of the finishingbelt is arranged horizontally above or on one side of the path of the blank and out of contact with the latter, as shown in Fig. 4. When the parts are, in this position, the operator places a blank between the central portion of the receiving-rollers, and when the latter have fed the blank forward, so that its front end is arranged under the finishingbelt and between the wrapping-Wheels, the

latter are depressed simultaneously, whereby that portion of the finishing-belt between Iof the blank, so as to form a bight in the belt, as represented in Fig. 5, thereby causing the constantly-moving finishing-belt to `sinootlien and finish these portions of the blank. As the wrapping-wheels descend the take-up wheels are drawn inwardly by the `belt owing to the deflection of the belt in `drawing the same around the blank. The

wrapping-wheels are retained in a depressed position until the desired portion of the blank has been fed past the belt and finished, after which the wrapping-wheels are raised preparatory to introducing another blank. After the blank has passed the finishing-belt the same is grasped by the delivery-rollers and discharged upon the delivery-table. In order to aid the operator in directing the blank between the wrapping-wheels, a guide o is arranged on the feed-table, against which the operator places the blank, as shown in Fig. 2. As the blank issues from the deliveryrollers it engages with a curved guide p on the delivery-table, which directs the finished blank toward one side of the table and causes the blanks to pile up in one place.

I claim as my inventionl. The combination with the feed mechanism which feeds the blanks in a predeter- `mined path through the machine and holds `,the blanks against movement in a direction at right angles to the plane of said path, of a nishing-belt arranged on one side of said `path and at right angles to the direction of the feed movement, a wrapping device bearing against the back of the belt on opposite sides of the blank, and mechanism whereby the wrapping device is moved to the opposite side of said path, thereby forming a bight in ICO IOS

IIS

the belt and pressing the same against the blank while the latter is supported by the feed mechanism against the pressure of the belt, substantially as set forth.

2. The combination with the feed mechanism which feeds the blanks in a predetermined path through the machine and holds the blanks against movement in a direction at right angles tb the plane of said path, of a finishing-belt arranged on one side of said path and at right angles to the direction of the feed movement, wrapping-wheels which bear against the back of the belt on opposite sides of the blank, a carrier on which said wheels are mounted and which is movable toward and from the opposite sides of said path,4 and means whereby said carrier is moved toward and from the opposite side of said path, thereby moving both wrappingwheels simultaneously in the same direction to bring the belt into and out of engagement with the blank, substantially as set forth.

3.v The combination with the blank-feeding mechanism, of a finishing-belt normally arranged on one side of the path of the blank, a pair of wrapping-wheels engaging with the belt on opposite sides of the blank, a carrier on which said wheels are mounted and whereby the latter are simultaneously moved in the same direction for engaging the belt with the blank and disengaging the same therefrom, a friction-board connected with said carrier and a pair of friction-rollers which are engaged with opposite sides of the frictionboard for shifting the board and the iinishing-belt connected therewith into an operative position and disengaged therefrom to release the board and permit the belt to resume its normal position7 substantially as set forth.

4. The combination with the blank-feeding mechanism, of a finishing-belt normally arranged on one side of the path of the blank, a pair of wrapping-wheels engaging with the belt on opposite sides of the blank, a carrier on which said wheels are mounted and whereby the latter are simultaneously moved in the same direction for engaging the belt with the blank and disengaging the same therefrom, a rock-level` connected with said carrier, a spring whereby the rock-lever is yieldingly held in its normal position, a friction-board connected with the rock-lever and provided with a thick and a thin portion, a pair of friction-rollers which are adapted to engage with opposite sides of the friction-board and one of which is journaled in stationary bearings while the other is j ournaled in movable bearings, and a treadle whereby the movable roller is shifted, substantially as set forth.

5. The combination with the pairs of horizontal feed-rollers, and a iinishing-belt arranged transversely between said pairs and normally above the lower feed-rollers, of a pair of wrapping-wheels engaging with the belt between the pairs of feed-rollers and a carrier on which said wheels are mounted and which is capable of vertical movement, substantially as set forth.

6. The combination with the blank-feedin g mechanism, of a finishing-belt arranged on one side of the path of the blank, a pair of Wrapping-wheels engaging with the belt on opposite sides of the blank, a shifting mechanism whereby the wrapping wheels are moved simultaneously in the same direction for engaging the belt with the blank and disengaging the same therefrom, and a take-up wheel engaging with the nishing-belt and mounted on a movable support, substantially as set forth.

7. The combination with the blank-feeding mechanism, of a finishing-belt arranged on one side of the path of the blanka pair of wrapping-wheels engaging with the belt on opposite sides of the blank, a shifting mechanism whereby wrapping-wheels are moved simultaneously in the same direction for engaging the belt with the blank and disengaging the same therefrom, take-up wheels engaging with the finishing-belt outside, of the wrapping-wheels and mounted on movable supports, and connecting mechanism whereby the take-up wheels are caused to move together, substantially as set forth.

8. The combination with the blank-feeding mechanism, of a iinishing-belt arranged on one side of the path of the blank, a pair of wrapping-wheels engaging with the belt on opposite sides of the blank, a shifting mechanism whereby wrapping-wheels are moved simultaneously in the same direction for engaging the belt with the blank and disengaging the same therefrom, take-up wheels engaging with the finishing-belt outside of the wrappingwheels, rock-levers carrying the take-np wheels, a rod or bar connected at its ends with one lever above its fulcrum and with the other lever below its fulcrum, and

a weight whereby said levers are normally turned for pressing the take-up wheels against the belt and drawing the latter taut, substantially as set forth.

Witness my hand this 14th da5T of June,

CHARLES L. WIEDRICH. Witnesses:

THEO. L. Pori, KATHRYN ELMORE.

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